Production of a Concentrate of Rare-Earth Metals from Wet-Process Phosphoric Acid
| Autor: | S. A. Vasilenko, T. V. Kon’kova, M. V. Papkova, D. A. Samieva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Ammonium carbonate
General Chemical Engineering Ammonium nitrate Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry Yttrium 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Suspension (chemistry) chemistry.chemical_compound chemistry Desorption Lanthanum Sulfate 0210 nano-technology Phosphoric acid |
| Zdroj: | Russian Journal of Applied Chemistry. 91:379-383 |
| ISSN: | 1608-3296 1070-4272 |
| Popis: | Desorption of rare-earth metals (REMs) (lanthanum, yttrium, and ytterbium), as well as iron and aluminum, from the KU-2 sulfocation exchanger phase with solutions of mineral acids and ammonium nitrate and sulfate of various concentrations was studied. New data on the distribution of REMs in these systems were obtained. It was found that it is the most rational to use an ammonium nitrate solution with concentration of 300 g L–1. It is recommended to precipitate a concentrate of REMs from the resulting desorbate with ammonium carbonate, with the subsequent separation of the suspension by the electrofl otation method. |
| Databáze: | OpenAIRE |
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